topic Re: Question about AutoRAID disk array in Operating System - HP-UX

Question about AutoRAID disk array

yc_2 — Wed, 31 Jan 2001 09:11:39 GMT

Hi,

When I perform ioscan -fnCdisk in MCSG with AutoRAID host, I got the following:

Class I H/W Path Driver S/W State H/W Type Description
:
disk 15 0/12/0/0.1.5 sdisk CLAIMED DEVICE HP C5447A
/dev/dsk/c4t1d5 /dev/rdsk/disk_query
/dev/rdsk/c4t1d5
:

What does the line /dev/rdsk/disk_query means ?

Thanks in advance,
YC

Re: Question about AutoRAID disk array

Clemens van Everdingen — Wed, 31 Jan 2001 10:49:25 GMT

Hi,

SAM creates a temporary device file /dev/dsk/disk_query for info gathering purposes.
When this file is left behind, the vgextend command gets confused and attempts to use it.

Ther is a patch for this problem!

PHCO_19047

Check the error description

Good luck !

Re: Question about AutoRAID disk array

yc_2 — Thu, 01 Feb 2001 02:31:56 GMT

Hi,

I have applied the patch. The statement still exist, does this cause any harm ?

Rgds,
YC

Re: Question about AutoRAID disk array

Clemens van Everdingen — Fri, 02 Feb 2001 10:46:39 GMT

Hi again,

The best way is to cleanup the corrupted LVM information on your system.
Else you will find more problems creating vg's and lvol's in the future I guess.

try the following solution:

In SAM: unconfigure every disk in the problem volume group
From the command line:
rm -fr /dev/"problem_volume_group_name"
rm /etc/lvmtab
vgscan

This should result in a /etc/lvmtab not having any /dev/dsk/disk_query entry.

Bye.
CvE

Re: Question about AutoRAID disk array

yc_2 — Sat, 03 Feb 2001 03:25:28 GMT

Thanks Clemens for taking the time for my question.

I don't know why when I perform ioscan -fnCdisk today, the problem has gone.

Not even listed in /etc/lvmtab and /dev/.

Hope I have no problem from now onwards because I was having odd behaviour yesterday using SAM to extend a lvol in the problem VG. I was forced to use command line to accomplished the lvol extend.